【摘要】 文章在铁木辛柯梁的基础上,建立螺旋桨、轴系及船体耦合振动的数学物理模型,采用声极子模型计算各船体截面振动引起的辐射声压。计算分析了激励力直接作用到船体和经螺旋桨、轴系激励船体振动产生声辐射的差别,指出轴系振动对螺旋桨激励力激起船体振动并产生声辐射有着关键的影响作用。更多还原

【Abstract】 Based on Timoshenko beam model, the calculation model of coupling vibration of propeller, shaft and ship hull is established in this paper, and the sound pressure derived by hull vibration is calculated with monopole or dipole model. Difference between the sound derived by hull vibration induced propeller excitation directly acting on hull and that acting on shaft is also analyzed, and therefore the effect of shaft on propeller excitation transmission to hull is demonstrated.更多还原